2 * QEMU PCI hotplug support
4 * Copyright (c) 2004 Fabrice Bellard
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
26 #include "hw/boards.h"
27 #include "hw/pci/pci.h"
30 #include "monitor/monitor.h"
32 #include "hw/virtio-blk.h"
33 #include "qemu/config-file.h"
34 #include "sysemu/blockdev.h"
35 #include "qapi/error.h"
37 #if defined(TARGET_I386)
38 static PCIDevice *qemu_pci_hot_add_nic(Monitor *mon,
42 Error *local_err = NULL;
47 bus = pci_get_bus_devfn(&devfn, devaddr);
49 monitor_printf(mon, "Invalid PCI device address %s\n", devaddr);
52 if (!((BusState*)bus)->allow_hotplug) {
53 monitor_printf(mon, "PCI bus doesn't support hotplug\n");
57 opts = qemu_opts_parse(qemu_find_opts("net"), opts_str ? opts_str : "", 0);
62 qemu_opt_set(opts, "type", "nic");
64 ret = net_client_init(opts, 0, &local_err);
65 if (error_is_set(&local_err)) {
66 qerror_report_err(local_err);
67 error_free(local_err);
70 if (nd_table[ret].devaddr) {
71 monitor_printf(mon, "Parameter addr not supported\n");
74 return pci_nic_init(&nd_table[ret], "rtl8139", devaddr);
77 static int scsi_hot_add(Monitor *mon, DeviceState *adapter,
78 DriveInfo *dinfo, int printinfo)
84 object_dynamic_cast(OBJECT(QLIST_FIRST(&adapter->child_bus)),
87 error_report("Device is not a SCSI adapter");
92 * drive_init() tries to find a default for dinfo->unit. Doesn't
93 * work at all for hotplug though as we assign the device to a
94 * specific bus instead of the first bus with spare scsi ids.
96 * Ditch the calculated value and reload from option string (if
99 dinfo->unit = qemu_opt_get_number(dinfo->opts, "unit", -1);
100 dinfo->bus = scsibus->busnr;
101 scsidev = scsi_bus_legacy_add_drive(scsibus, dinfo->bdrv, dinfo->unit,
106 dinfo->unit = scsidev->id;
109 monitor_printf(mon, "OK bus %d, unit %d\n",
110 scsibus->busnr, scsidev->id);
114 int pci_drive_hot_add(Monitor *mon, const QDict *qdict, DriveInfo *dinfo)
119 const char *pci_addr = qdict_get_str(qdict, "pci_addr");
121 switch (dinfo->type) {
123 if (pci_read_devaddr(mon, pci_addr, &dom, &pci_bus, &slot)) {
126 dev = pci_find_device(pci_find_root_bus(dom), pci_bus,
129 monitor_printf(mon, "no pci device with address %s\n", pci_addr);
132 if (scsi_hot_add(mon, &dev->qdev, dinfo, 1) != 0) {
137 monitor_printf(mon, "Can't hot-add drive to type %d\n", dinfo->type);
146 static PCIDevice *qemu_pci_hot_add_storage(Monitor *mon,
151 DriveInfo *dinfo = NULL;
157 if (get_param_value(buf, sizeof(buf), "if", opts)) {
158 if (!strcmp(buf, "scsi"))
160 else if (!strcmp(buf, "virtio")) {
163 monitor_printf(mon, "type %s not a hotpluggable PCI device.\n", buf);
167 monitor_printf(mon, "no if= specified\n");
171 if (get_param_value(buf, sizeof(buf), "file", opts)) {
172 dinfo = add_init_drive(opts);
175 if (dinfo->devaddr) {
176 monitor_printf(mon, "Parameter addr not supported\n");
183 bus = pci_get_bus_devfn(&devfn, devaddr);
185 monitor_printf(mon, "Invalid PCI device address %s\n", devaddr);
188 if (!((BusState*)bus)->allow_hotplug) {
189 monitor_printf(mon, "PCI bus doesn't support hotplug\n");
195 dev = pci_create(bus, devfn, "lsi53c895a");
196 if (qdev_init(&dev->qdev) < 0)
199 if (scsi_hot_add(mon, &dev->qdev, dinfo, 0) != 0) {
200 qdev_unplug(&dev->qdev, NULL);
207 monitor_printf(mon, "virtio requires a backing file/device.\n");
210 dev = pci_create(bus, devfn, "virtio-blk-pci");
211 if (qdev_prop_set_drive(&dev->qdev, "drive", dinfo->bdrv) < 0) {
212 qdev_free(&dev->qdev);
216 if (qdev_init(&dev->qdev) < 0)
225 void pci_device_hot_add(Monitor *mon, const QDict *qdict)
227 PCIDevice *dev = NULL;
228 const char *pci_addr = qdict_get_str(qdict, "pci_addr");
229 const char *type = qdict_get_str(qdict, "type");
230 const char *opts = qdict_get_try_str(qdict, "opts");
232 /* strip legacy tag */
233 if (!strncmp(pci_addr, "pci_addr=", 9)) {
241 if (!strcmp(pci_addr, "auto"))
244 if (strcmp(type, "nic") == 0) {
245 dev = qemu_pci_hot_add_nic(mon, pci_addr, opts);
246 } else if (strcmp(type, "storage") == 0) {
247 dev = qemu_pci_hot_add_storage(mon, pci_addr, opts);
249 monitor_printf(mon, "invalid type: %s\n", type);
253 monitor_printf(mon, "OK domain %d, bus %d, slot %d, function %d\n",
254 pci_find_domain(dev->bus),
255 pci_bus_num(dev->bus), PCI_SLOT(dev->devfn),
256 PCI_FUNC(dev->devfn));
258 monitor_printf(mon, "failed to add %s\n", opts);
262 static int pci_device_hot_remove(Monitor *mon, const char *pci_addr)
267 Error *local_err = NULL;
269 if (pci_read_devaddr(mon, pci_addr, &dom, &bus, &slot)) {
273 d = pci_find_device(pci_find_root_bus(dom), bus, PCI_DEVFN(slot, 0));
275 monitor_printf(mon, "slot %d empty\n", slot);
279 qdev_unplug(&d->qdev, &local_err);
280 if (error_is_set(&local_err)) {
281 monitor_printf(mon, "%s\n", error_get_pretty(local_err));
282 error_free(local_err);
289 void do_pci_device_hot_remove(Monitor *mon, const QDict *qdict)
291 pci_device_hot_remove(mon, qdict_get_str(qdict, "pci_addr"));